[NL2-NL10] NL10 SH JJ on paired/connected board

I think I should've made my turnbet a bit bigger, like €2 at least. But apart from that, I don't think there's much I beat at the river so I think a fold is the best option, and a blockingbet makes no sense since that makes me completely commited, or should I've bet the river for value?

c/f river is fine, if you think that player won´t bet with weaker hands than straight or boat.
Board is too good to bluff, but what hand he could hold that called both flop and turn bets that you can beat